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A jetboat is a boat propelled by a jet of water ejected from the back of the craft. Unlike a powerboat or motorboat that uses an external propeller in the water below or behind the boat, a jetboat draws the water from under the boat through an intake and into a pump-jet inside the boat, before expelling it through a nozzle at the stern.
Cabin Cruiser Cons. Storage: You’ll most likely want to keep your boat parked at a marina, where moorage fees in the U.S. can range anywhere from $12 to $240 per square foot per year, depending ...
A pump-jet, hydrojet, water jet, or jet drive uses a ducted propeller (axial-flow pump), centrifugal pump, or mixed flow pump to create a jet of water for propulsion. These incorporate an intake for source water and a nozzle to direct its flow out, generating momentum, and in most cases, employing thrust vectoring to steer the craft.
The boat was reported to reach a speed of four mph moving upstream. [7] [8] [9] On December 21, 1833, Irish engineer John Howard Kyan received a UK patent for propelling ships by a jet of water ejected from the stern. [10] In April 1932, Italian engineer Secondo Campini demonstrated a pump-jet propelled boat in Venice, Italy. The boat achieved ...
English inventor Francis Ronalds described what he called a propelling rudder in 1859 that combined the propulsion and steering mechanisms of a boat in a single apparatus. . The propeller was placed in a frame having an outer profile similar to a rudder and attached to a vertical shaft that allowed the device to rotate in plane while spin was transmitted to the propell
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A jet engine providing 1,700 pounds-force (7,600 N) of thrust was used for main propulsion. A separate 110 hp (82 kW) gas engine was used to drive lift fans, and also to power out-drive units that were used for off-cushion slow-speed maneuvering. During the first year of testing, the XR-1 was fitted with more powerful main propulsion and ...
There are five categories of Sea-Doo models: Recreation, Tow Sports, Touring, Sport Fishing, and Performance. [14]The Sea-Doo jet-powered sport boats included a four-seater Sportster 150 with 155 hp or 215 hp, a four-seater Speedster 150 with 255 hp, and a seven-seater Speedster 200 with 310 hp, and a Speedster 230 with space for up to twelve people.